Saint Adolar was an 8th-century German bishop and missionary who served as a companion to Saint Boniface. While working in the region of Friesland, he was killed by pagan Frisians in Dokkum around 754 or 755. Following his death, his remains were eventually moved to Erfurt, where he is traditionally honored. He is remembered as a martyr who participated in the early missionary efforts of the Catholic Church in Northern Europe.